Ancient Water Flows

Ancient Water Flows on Mars stand as some of the most compelling evidence that the Red Planet once harbored conditions capable of supporting life. Satellite imagery and rover missions have revealed dry riverbeds, lake basins, and mineral deposits that only form in liquid water. NASA's Curiosity rover even found rounded pebbles—geological fingerprints of ancient stream flows. While Mars is now arid, these features suggest it had a warmer, wetter past with persistent water sources, possibly for millions of years. This discovery fuels the tantalizing possibility that microbial life may have once existed on our planetary neighbor.